Need to program a smart key for a 2023 BMW 5 Series with a BDC3 system? The LONSDOR K518PRO, together with the ADP40 and BDC3 Adapter Board, can generate a dealer key through a guided procedure. Here’s how the process works.
Required Equipment
LONSDOR K518PRO Key Programmer
ADP40 Adapter
BDC3 Solder-Free Adapter
Original working smart key
New blank smart key
Programming Procedure
1. Read the Original Key Data
(1) Remove the chip from the original smart key and place it on the BDC3 adapter board.
(2) Connect the BDC3 adapter board to the ADP40 adapter, then connect the ADP40 to the LONSDOR K518PRO.
2. Generate the New Smart Key
(1) On the K518PRO, navigate to:
Generate Smart Key → BMW → G Chassis → BMW G BDC3
(2) Place the new key in the card slot and select Generate.
(3) Once the process is completed successfully, return to the main menu.
3. Create the Dealer Key
(1) Navigate to:
IMMO & Remote → BMW → Select from Type → BDC03 → BDC3 Key Copy (Encrypted)
(2) Ensure Wi-Fi is connected and select Read Working Key to read the original key data.
(3) Save the generated file when prompted.
(4) Next, select To Use Lonsdor Key, place the new smart key flat on the card slot, and press OK. The device will generate and lock the dealer key automatically.
Verification
Test both the original key and the newly programmed key. Confirm that the vehicle starts normally and that the Lock and Unlock functions operate correctly.
Why LONSDOR K518PRO?
The LONSDOR K518PRO combines BMW BDC3 smart key generation and dealer key creation in a guided workflow, helping locksmiths and automotive technicians complete key programming jobs more efficiently.
